java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:13:24,505 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:13:24,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:13:24,522 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:13:24,522 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:13:24,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:13:24,528 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:13:24,530 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:13:24,531 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:13:24,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:13:24,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:13:24,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:13:24,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:13:24,536 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:13:24,540 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:13:24,541 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:13:24,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:13:24,556 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:13:24,557 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:13:24,558 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:13:24,559 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:13:24,561 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:13:24,561 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:13:24,561 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:13:24,562 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:13:24,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:13:24,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:13:24,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:13:24,568 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:13:24,572 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:13:24,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:13:24,573 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:13:24,573 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:13:24,574 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:13:24,575 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:13:24,575 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:13:24,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:13:24,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:13:24,591 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:13:24,591 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:13:24,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:13:24,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:13:24,592 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:13:24,592 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:13:24,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:13:24,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:13:24,593 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:13:24,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:13:24,593 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:13:24,593 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:13:24,593 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:13:24,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:13:24,594 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:13:24,595 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:13:24,595 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:13:24,645 INFO ]: Repository-Root is: /tmp [2018-06-22 05:13:24,660 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:13:24,668 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:13:24,670 INFO ]: Initializing SmtParser... [2018-06-22 05:13:24,670 INFO ]: SmtParser initialized [2018-06-22 05:13:24,671 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 [2018-06-22 05:13:24,672 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 05:13:24,770 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 unknown [2018-06-22 05:13:25,045 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 [2018-06-22 05:13:25,050 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:13:25,057 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:13:25,058 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:13:25,058 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:13:25,058 INFO ]: ChcToBoogie initialized [2018-06-22 05:13:25,062 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,106 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25 Unit [2018-06-22 05:13:25,106 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:13:25,107 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:13:25,107 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:13:25,107 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:13:25,127 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,127 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,133 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,133 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,135 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,137 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,138 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... [2018-06-22 05:13:25,139 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:13:25,140 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:13:25,140 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:13:25,140 INFO ]: RCFGBuilder initialized [2018-06-22 05:13:25,141 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:13:25,156 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:13:25,156 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:13:25,156 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:13:25,156 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:13:25,156 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:13:25,156 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 05:13:25,351 INFO ]: Using library mode [2018-06-22 05:13:25,356 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:13:25 BoogieIcfgContainer [2018-06-22 05:13:25,356 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:13:25,357 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:13:25,357 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:13:25,360 INFO ]: TraceAbstraction initialized [2018-06-22 05:13:25,370 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:13:25" (1/3) ... [2018-06-22 05:13:25,371 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f521925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:13:25, skipping insertion in model container [2018-06-22 05:13:25,371 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:13:25" (2/3) ... [2018-06-22 05:13:25,371 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f521925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:13:25, skipping insertion in model container [2018-06-22 05:13:25,371 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:13:25" (3/3) ... [2018-06-22 05:13:25,373 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:13:25,392 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:13:25,409 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:13:25,467 INFO ]: Using default assertion order modulation [2018-06-22 05:13:25,468 INFO ]: Interprodecural is true [2018-06-22 05:13:25,468 INFO ]: Hoare is false [2018-06-22 05:13:25,468 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:13:25,468 INFO ]: Backedges is TWOTRACK [2018-06-22 05:13:25,468 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:13:25,468 INFO ]: Difference is false [2018-06-22 05:13:25,468 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:13:25,468 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:13:25,483 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:13:25,492 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:13:25,492 INFO ]: Found error trace [2018-06-22 05:13:25,493 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:25,493 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:25,497 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:13:25,498 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:25,498 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:25,530 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:25,530 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:13:25,531 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:25,567 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:25,646 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:25,647 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:13:25,647 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:13:25,649 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:13:25,661 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:13:25,661 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:13:25,663 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:13:25,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:25,717 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:13:25,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:13:25,719 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:13:25,719 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:25,727 INFO ]: With dead ends: 9 [2018-06-22 05:13:25,727 INFO ]: Without dead ends: 9 [2018-06-22 05:13:25,729 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:13:25,745 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:13:25,759 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:13:25,761 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:13:25,761 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:13:25,763 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:13:25,763 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:25,763 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:13:25,763 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:13:25,763 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:13:25,763 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:13:25,763 INFO ]: Found error trace [2018-06-22 05:13:25,763 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:25,763 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:25,764 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:13:25,764 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:25,764 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:25,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:25,765 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:13:25,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:25,798 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:25,946 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:25,946 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:25,946 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:25,962 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:13:26,028 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:26,039 INFO ]: Computing forward predicates... [2018-06-22 05:13:26,129 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:26,156 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:26,156 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:13:26,157 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:13:26,157 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:13:26,157 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:13:26,157 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:13:26,192 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:26,192 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 05:13:26,193 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:13:26,193 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:13:26,193 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:26,193 INFO ]: With dead ends: 10 [2018-06-22 05:13:26,193 INFO ]: Without dead ends: 10 [2018-06-22 05:13:26,195 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:13:26,195 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 05:13:26,196 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 05:13:26,196 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 05:13:26,197 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 05:13:26,197 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 05:13:26,197 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:26,197 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 05:13:26,197 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:13:26,197 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 05:13:26,198 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 05:13:26,198 INFO ]: Found error trace [2018-06-22 05:13:26,198 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:26,198 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:26,198 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 05:13:26,198 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:26,198 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:26,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:26,199 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:13:26,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:26,250 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:26,469 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:26,469 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:26,469 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:13:26,489 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:26,561 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:13:26,561 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:26,563 INFO ]: Computing forward predicates... [2018-06-22 05:13:27,559 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:27,582 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:27,582 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 05:13:27,582 INFO ]: Interpolant automaton has 6 states [2018-06-22 05:13:27,583 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 05:13:27,583 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:13:27,583 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 05:13:27,681 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:27,681 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:13:27,682 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 05:13:27,682 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 05:13:27,682 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:27,682 INFO ]: With dead ends: 11 [2018-06-22 05:13:27,682 INFO ]: Without dead ends: 11 [2018-06-22 05:13:27,682 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 05:13:27,682 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:13:27,683 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:13:27,683 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:13:27,684 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:13:27,684 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 05:13:27,684 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:27,684 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:13:27,684 INFO ]: Interpolant automaton has 6 states. [2018-06-22 05:13:27,684 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:13:27,684 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:13:27,684 INFO ]: Found error trace [2018-06-22 05:13:27,684 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:27,685 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:27,685 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 05:13:27,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:27,685 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:27,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:27,686 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:13:27,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:27,722 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:28,046 WARN ]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 05:13:28,247 WARN ]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 05:13:28,267 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:28,267 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:28,267 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:28,275 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 05:13:28,345 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 05:13:28,345 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:28,348 INFO ]: Computing forward predicates... [2018-06-22 05:13:29,259 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:29,281 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:29,281 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 05:13:29,282 INFO ]: Interpolant automaton has 7 states [2018-06-22 05:13:29,282 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 05:13:29,282 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-22 05:13:29,282 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 05:13:29,570 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:29,570 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 05:13:29,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 05:13:29,570 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 05:13:29,570 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:29,570 INFO ]: With dead ends: 12 [2018-06-22 05:13:29,570 INFO ]: Without dead ends: 12 [2018-06-22 05:13:29,571 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-06-22 05:13:29,571 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 05:13:29,572 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 05:13:29,572 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 05:13:29,572 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 05:13:29,573 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 05:13:29,573 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:29,573 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 05:13:29,573 INFO ]: Interpolant automaton has 7 states. [2018-06-22 05:13:29,573 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 05:13:29,573 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 05:13:29,573 INFO ]: Found error trace [2018-06-22 05:13:29,573 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:29,573 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:29,573 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 05:13:29,573 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:29,573 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:29,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:29,575 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:13:29,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:29,628 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:29,821 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:29,821 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:29,821 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:29,832 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 05:13:29,861 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 05:13:29,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:29,864 INFO ]: Computing forward predicates... [2018-06-22 05:13:36,592 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:36,612 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:36,612 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-22 05:13:36,612 INFO ]: Interpolant automaton has 9 states [2018-06-22 05:13:36,612 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 05:13:36,613 INFO ]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-22 05:13:36,613 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-06-22 05:13:36,817 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:36,817 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 05:13:36,817 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 05:13:36,817 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-22 05:13:36,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:36,818 INFO ]: With dead ends: 13 [2018-06-22 05:13:36,818 INFO ]: Without dead ends: 13 [2018-06-22 05:13:36,818 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-06-22 05:13:36,818 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 05:13:36,820 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 05:13:36,820 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 05:13:36,820 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 05:13:36,820 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 05:13:36,820 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:36,820 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 05:13:36,820 INFO ]: Interpolant automaton has 9 states. [2018-06-22 05:13:36,820 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 05:13:36,820 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 05:13:36,821 INFO ]: Found error trace [2018-06-22 05:13:36,821 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:36,821 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:36,821 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 05:13:36,821 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:36,821 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:36,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:36,821 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:13:36,821 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:36,889 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:37,255 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:37,255 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:37,255 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:37,263 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 05:13:37,304 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 05:13:37,304 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:37,308 INFO ]: Computing forward predicates... [2018-06-22 05:13:42,961 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:42,982 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:42,982 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 05:13:42,982 INFO ]: Interpolant automaton has 10 states [2018-06-22 05:13:42,982 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 05:13:42,982 INFO ]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-06-22 05:13:42,982 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-22 05:13:43,247 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:43,247 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 05:13:43,247 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 05:13:43,247 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-22 05:13:43,248 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:43,248 INFO ]: With dead ends: 14 [2018-06-22 05:13:43,248 INFO ]: Without dead ends: 14 [2018-06-22 05:13:43,248 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2018-06-22 05:13:43,248 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 05:13:43,249 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 05:13:43,249 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 05:13:43,250 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 05:13:43,250 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 05:13:43,250 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:43,250 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 05:13:43,250 INFO ]: Interpolant automaton has 10 states. [2018-06-22 05:13:43,250 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 05:13:43,250 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 05:13:43,250 INFO ]: Found error trace [2018-06-22 05:13:43,250 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:43,250 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:43,250 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 6 times [2018-06-22 05:13:43,250 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:43,250 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:43,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:43,251 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:13:43,251 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:43,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:43,533 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:43,533 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:43,533 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:43,549 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 05:13:43,602 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-22 05:13:43,602 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:43,605 INFO ]: Computing forward predicates... [2018-06-22 05:13:51,360 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:51,391 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:13:51,391 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-06-22 05:13:51,391 INFO ]: Interpolant automaton has 13 states [2018-06-22 05:13:51,392 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 05:13:51,392 INFO ]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 05:13:51,392 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-06-22 05:13:51,565 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 14 [2018-06-22 05:13:51,916 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:13:51,916 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 05:13:51,937 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 05:13:51,937 INFO ]: Start accepts. Automaton has 13 states. Word has length 13 [2018-06-22 05:13:51,937 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:13:51,938 INFO ]: With dead ends: 16 [2018-06-22 05:13:51,938 INFO ]: Without dead ends: 16 [2018-06-22 05:13:51,938 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2018-06-22 05:13:51,938 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 05:13:51,939 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 05:13:51,940 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 05:13:51,940 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 05:13:51,940 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 05:13:51,940 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:13:51,940 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 05:13:51,940 INFO ]: Interpolant automaton has 13 states. [2018-06-22 05:13:51,940 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 05:13:51,940 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 05:13:51,940 INFO ]: Found error trace [2018-06-22 05:13:51,941 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:13:51,941 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:13:51,941 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 7 times [2018-06-22 05:13:51,941 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:13:51,941 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:13:51,941 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:51,941 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 05:13:51,941 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:13:52,018 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:52,678 WARN ]: Spent 377.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-06-22 05:13:53,552 WARN ]: Spent 806.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-06-22 05:13:53,708 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:13:53,708 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:13:53,708 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 05:13:53,726 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:13:53,781 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:13:53,785 INFO ]: Computing forward predicates... [2018-06-22 05:13:54,221 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:13:54,243 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:54,253 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:54,263 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:54,277 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:13:54,293 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:54,297 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:13:54,356 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:54,377 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:13:54,411 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:55,369 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:55,387 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:13:55,394 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:14:02,505 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:02,524 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:02,531 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:14:02,531 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:14:09,359 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:09,531 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:14:09,718 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 05:14:09,758 WARN ]: Simplifying disjunction of 8112 conjuctions. This might take some time... [2018-06-22 05:14:10,310 INFO ]: Simplified to disjunction of 688 conjuctions. [2018-06-22 05:14:10,373 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:14:10,384 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,409 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,509 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,532 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,593 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,636 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 05:14:10,654 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 05:14:10,672 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 05:14:10,790 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 05:14:27,045 INFO ]: Timeout while computing interpolants [2018-06-22 05:14:27,246 WARN ]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:14:27,246 WARN ]: Verification canceled [2018-06-22 05:14:27,250 WARN ]: Timeout [2018-06-22 05:14:27,250 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:14:27 BoogieIcfgContainer [2018-06-22 05:14:27,250 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:14:27,251 INFO ]: Toolchain (without parser) took 62199.74 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 258.6 MB in the beginning and 169.2 MB in the end (delta: 89.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:14:27,251 INFO ]: SmtParser took 0.32 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:14:27,253 INFO ]: ChcToBoogie took 49.11 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:14:27,254 INFO ]: Boogie Preprocessor took 32.30 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 255.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 05:14:27,254 INFO ]: RCFGBuilder took 215.94 ms. Allocated memory is still 304.1 MB. Free memory was 255.6 MB in the beginning and 246.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:14:27,255 INFO ]: TraceAbstraction took 61892.87 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.6 MB in the beginning and 169.2 MB in the end (delta: 77.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:14:27,265 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.32 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.11 ms. Allocated memory is still 304.1 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 32.30 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 255.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 215.94 ms. Allocated memory is still 304.1 MB. Free memory was 255.6 MB in the beginning and 246.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61892.87 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.6 MB in the beginning and 169.2 MB in the end (delta: 77.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 12283 quantified variables from 11 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.7s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 SDtfs, 15 SDslu, 136 SDs, 0 SdLazy, 57 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 45 SyntacticMatches, 15 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6151 SizeOfPredicates, 24 NumberOfNonLiveVariables, 780 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 0/112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-14-27-278.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig03.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-14-27-278.csv Completed graceful shutdown